@ApiMethod(name = "updateInvoiceStatus")
  public void updateInvoiceStatus(InvoiceEntity valueToUpdateStatus) {

    ofy().save().entity(valueToUpdateStatus).now();

    long invoiceId = valueToUpdateStatus.getId();

    ReceivableEntity fetchedReceivableEntity =
        ofy().load().type(ReceivableEntity.class).filter("invoiceId = ", invoiceId).first().now();

    if (fetchedReceivableEntity != null) {
      fetchedReceivableEntity.setStatus(valueToUpdateStatus.getStatus());
      ofy().save().entity(fetchedReceivableEntity).now();
    }
  }
  @ApiMethod(name = "addInvoice")
  public void addInvoice(InvoiceEntity invoiceEntity) {

    if (invoiceEntity.getId() != null) {

      ReceivableEntity receiveByID =
          ofy().load().type(ReceivableEntity.class).id(invoiceEntity.getId()).now();

      receiveByID.setCustomer(invoiceEntity.getCustomer());
      receiveByID.setFinalTotal(invoiceEntity.getFinalTotal());
      receiveByID.setInvoiceDate(invoiceEntity.getInvoiceDate());
      receiveByID.setInvoiceDueDate(invoiceEntity.getInvoiceDueDate());
      receiveByID.setInvoiceId(invoiceEntity.getId());
      receiveByID.setBusiness(invoiceEntity.getBusiness());
      receiveByID.setCreatedDate(invoiceEntity.getCreatedDate());
      receiveByID.setModifiedDate(invoiceEntity.getModifiedDate());
      receiveByID.setModifiedBy(invoiceEntity.getModifiedBy());
      ofy().save().entity(receiveByID).now();

    } else {
      ReceivableEntity receivableEntity = new ReceivableEntity();

      receivableEntity.setCustomer(invoiceEntity.getCustomer());
      receivableEntity.setFinalTotal(invoiceEntity.getFinalTotal());
      receivableEntity.setInvoiceDate(invoiceEntity.getInvoiceDate());
      receivableEntity.setInvoiceDueDate(invoiceEntity.getInvoiceDueDate());
      receivableEntity.setInvoiceId(invoiceEntity.getId());
      receivableEntity.setBusiness(invoiceEntity.getBusiness());
      receivableEntity.setCreatedDate(invoiceEntity.getCreatedDate());
      receivableEntity.setModifiedDate(invoiceEntity.getModifiedDate());
      receivableEntity.setModifiedBy(invoiceEntity.getModifiedBy());
      ofy().save().entity(receivableEntity).now();
    }

    if (invoiceEntity.getId() == null) {
      invoiceEntity.setCreatedDate(new Date());
      // stockItemEntity.setModifiedDate(new Date());
    } else {
      invoiceEntity.setModifiedDate(new Date());
    }

    ofy().save().entity(invoiceEntity).now();

    System.out.println(invoiceEntity.getInvoiceLineItemList());

    List<StockItemEntity> stockItemEntity = ofy().load().type(StockItemEntity.class).list();

    /* For Reduce the Stock Quantity */

    for (int i = 0; i < invoiceEntity.getInvoiceLineItemList().size(); i++) {
      for (int j = 0; j < stockItemEntity.size(); j++) {
        if (invoiceEntity
            .getInvoiceLineItemList()
            .get(i)
            .getItemName()
            .equals(stockItemEntity.get(j).getItemName())) {
          StockItemEntity a = stockItemEntity.get(j);

          a.setQty(
              (stockItemEntity.get(j).getQty())
                  - (Integer.valueOf((invoiceEntity.getInvoiceLineItemList().get(i).getQty()))));
          ofy().save().entity(a).now();
        }
      }
    }

    /* For Add in ReceivableEntity */

  }